By Richard Schmude Jr.

Эта книга описывает различные искусственные спутники, которые можно наблюдать даже не вооружённым взглядом, от Международной Космической Станции и до всевозможных спутников-шпионов разных стран. Ричард Шмуде подробно их описывает, как они могут наблюдаться любителями, как их распознать, и как предсказать их орбиты, как их сфотографировать и какие исследования доступны любителям при таких наблюдениях.

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In this case, the MRO arrived at Mars in a highly elliptical orbit. Over the next few weeks, engineers forced the MRO to dip to an altitude of 105 km at perigee. The MRO was still traveling too fast to fall into its desired orbit at that time. See Fig. 23a. When the MRO reached perigee Mars’ atmosphere was thick enough to exert a gentle frictional force, which over time 16 Satellite Basics Fig. 22. In the gravitational slingshot method, a slow-moving spacecraft approaches Jupiter from the right, the spacecraft accelerates as it approaches Jupiter and its speed increases.

For example, our Sun may cause our atmosphere to expand. This would lead to a satellite slowing down and burning up in the atmosphere. See Fig. 33. A collision with a small object may destroy instruments. According to a NASA website, one of the Themis satellites was struck by an object in October 2010. Intense radiation from our Sun may cause a computer to shut 25 Satellite Basics Fig. 33. The Sun may cause a planetary atmosphere to expand, which in turn may be disastrous for a satellite. ). down.

5. Relative sizes of mirrors on a few recent and future space telescopes. 40 m for the Wide Field Infrared Survey Explorer (WISE). ). 12. Scientific objectives of the Chang’e-1 lunar orbiter and relevant instruments. Data are from Huixian et al. (2005) Objective Instrument Obtain a three dimensional (3-D) image of the lunar surface Survey the thickness of the lunar regolith Determine the distribution of useful elements Explore the environment between the Moon and Earth Stereo camera, laser altimeter Microwave radiometer Spectrometer imager, X-ray and gamma ray spectrometers Particle detector, X-ray and gamma ray spectrometers 43 Scientific Satellite Spacecraft Fig.

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